物理综合计算题文字多,综合性强,难度大,似乎高深莫测。其实,它们大都是由一些简单题组成的复合题。学生虽然掌握了解答简单题的知识和经验,但开始独立解综合题时,因综合分析能力差,不善于将繁化简,不能将知识准确迁移,往往会感到无从下手。如何讲好综合计算题的解题技巧呢?笔者在多年的教学实践中,按教育心理学提出的“创设问题的情境,布点设疑,诱发思维”的方式进行教学,效果较好。现以一题为例谈谈我们的做法。题目:用阿基米德定律可以测物质的密度,某物体在空气中称重是24.5牛顿,在水中称重是21.364牛顿,求构成该物体材料的密度。学生看了这道题,有的茫然不 Physical synthesis of multiple essay questions, comprehensive, difficult, it seems unpredictable. In fact, most of them are composed of simple questions. Although students have mastered the knowledge and experience of answering simple questions, when they begin to independently solve the comprehensive questions, they often feel helpless because of their poor comprehensive analysis skills, poor knowledge of the shortcomings and inability to accurately transfer knowledge. How to talk about the comprehensive calculation of the problem-solving skills? The author in many years of teaching practice, according to educational psychology put forward the “creation of the problem situation, the distribution of suspicion, induced thinking” approach to teaching, the effect is better. Take a question as an example to talk about our approach. Title: The density of a substance can be measured using the Archimedes' Law. An object weighs 24.5 Newton in air and 21.364 Newton in water and determines the density of the material that constitutes the object. Students read this question, some blank